openkylin
/
platform_system_core
mirror of https://gitee.com/openkylin/platform_system_core.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

Merge "graphics: Add colorspace definitions" into klp-volantis-dev

This commit is contained in:
Alex Ray 2014-02-21 23:54:04 +00:00 committed by Android (Google) Code Review
parent 24d06bc9c6 c9f3bcf87b
commit 4fc8231c18
1 changed files with 130 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

130
include/system/graphics.h
View File

@ -297,6 +297,136 @@ enum {
HAL_TRANSFORM_RESERVED = 0x08,
};
/**
* Colorspace Definitions
* ======================
*
* Colorspace is the definition of how pixel values should be interpreted.
* It includes primaries (including white point) and the transfer
* characteristic function, which describes both gamma curve and numeric
* range (within the bit depth).
*/
enum {
/*
* Arbitrary colorspace with manually defined characteristics.
* Colorspace definition must be communicated separately.
*
* This is used when specifying primaries, transfer characteristics,
* etc. separately.
*
* A typical use case is in video encoding parameters (e.g. for H.264),
* where a colorspace can have separately defined primaries, transfer
* characteristics, etc.
*/
HAL_COLORSPACE_ARBITRARY = 0x1,
/*
* YCbCr Colorspaces
* -----------------
*
* Primaries are given using (x,y) coordinates in the CIE 1931 definition
* of x and y specified by ISO 11664-1.
*
* Transfer characteristics are the opto-electronic transfer characteristic
* at the source as a function of linear optical intensity (luminance).
*/
/*
* JPEG File Interchange Format (JFIF)
*
* Same model as BT.601-625, but all values (Y, Cb, Cr) range from 0 to 255
*
* Transfer characteristic curve:
* E = 1.099 * L ^ 0.45 - 0.099, 1.00 >= L >= 0.018
* E = 4.500 L, 0.018 > L >= 0
* L - luminance of image 0 <= L <= 1 for conventional colorimetry
* E - corresponding electrical signal
*
* Primaries: x y
* green 0.290 0.600
* blue 0.150 0.060
* red 0.640 0.330
* white (D65) 0.3127 0.3290
*/
HAL_COLORSPACE_JFIF = 0x101,
/*
* ITU-R Recommendation 601 (BT.601) - 625-line
*
* Standard-definition television, 625 Lines (PAL)
*
* For 8-bit-depth formats:
* Luma (Y) samples should range from 16 to 235, inclusive
* Chroma (Cb, Cr) samples should range from 16 to 240, inclusive
*
* For 10-bit-depth formats:
* Luma (Y) samples should range from 64 to 940, inclusive
* Chroma (Cb, Cr) samples should range from 64 to 960, inclusive
*
* Transfer characteristic curve:
* E = 1.099 * L ^ 0.45 - 0.099, 1.00 >= L >= 0.018
* E = 4.500 L, 0.018 > L >= 0
* L - luminance of image 0 <= L <= 1 for conventional colorimetry
* E - corresponding electrical signal
*
* Primaries: x y
* green 0.290 0.600
* blue 0.150 0.060
* red 0.640 0.330
* white (D65) 0.3127 0.3290
*/
HAL_COLORSPACE_BT601_625 = 0x102,
/*
* ITU-R Recommendation 601 (BT.601) - 525-line
*
* Standard-definition television, 525 Lines (NTSC)
*
* For 8-bit-depth formats:
* Luma (Y) samples should range from 16 to 235, inclusive
* Chroma (Cb, Cr) samples should range from 16 to 240, inclusive
*
* For 10-bit-depth formats:
* Luma (Y) samples should range from 64 to 940, inclusive
* Chroma (Cb, Cr) samples should range from 64 to 960, inclusive
*
* Transfer characteristic curve:
* E = 1.099 * L ^ 0.45 - 0.099, 1.00 >= L >= 0.018
* E = 4.500 L, 0.018 > L >= 0
* L - luminance of image 0 <= L <= 1 for conventional colorimetry
* E - corresponding electrical signal
*
* Primaries: x y
* green 0.310 0.595
* blue 0.155 0.070
* red 0.630 0.340
* white (D65) 0.3127 0.3290
*/
HAL_COLORSPACE_BT601_525 = 0x103,
/*
* ITU-R Recommendation 709 (BT.709)
*
* High-definition television
*
* For 8-bit-depth formats:
* Luma (Y) samples should range from 16 to 235, inclusive
* Chroma (Cb, Cr) samples should range from 16 to 240, inclusive
*
* For 10-bit-depth formats:
* Luma (Y) samples should range from 64 to 940, inclusive
* Chroma (Cb, Cr) samples should range from 64 to 960, inclusive
*
* Primaries: x y
* green 0.300 0.600
* blue 0.150 0.060
* red 0.640 0.330
* white (D65) 0.3127 0.3290
*/
HAL_COLORSPACE_BT709 = 0x104,
};
#ifdef __cplusplus
}
#endif